<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<!-- templates/fragments/common/mask-layer.html -->
<div th:fragment="mask-layer" class="mask-layer" id="globalMaskLayer">
    <!-- 空内容，仅作为遮罩层 -->
</div>
</body>
</html>